CN2111596U - Antijamming automatic light control switch for street lamp - Google Patents
Antijamming automatic light control switch for street lamp Download PDFInfo
- Publication number
- CN2111596U CN2111596U CN 91232327 CN91232327U CN2111596U CN 2111596 U CN2111596 U CN 2111596U CN 91232327 CN91232327 CN 91232327 CN 91232327 U CN91232327 U CN 91232327U CN 2111596 U CN2111596 U CN 2111596U
- Authority
- CN
- China
- Prior art keywords
- interference
- light control
- street lamp
- circuit
- control switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The utility model relates to a light control automatic switch for street lamp, which has a high interference resistant capacity. The utility model is characterized in that the circuit comprises an anti-interference delay circuit (5) formed by adopting a time-base circuit NE555 as the main body, a phase inverter and an anti-interference output pole. When nonpersistent interfering signals such as lightnings, firelights, car lightings appear, the output signals of the delay circuit pass the phase inverter to keep the output pole stable, therefore, playing an anti-interference role. The device also completely eliminates the instability of ordinary light control switches around the critical point of the controlled illumination intensity.
Description
The utility model is a kind of street lamp that has improved or the automatic light control switch of other lighting.
Existing various street lamp automatic light control switch generally uses photo resistance or photodiode to make photometry element, and its shortcoming is a poor anti jamming capability, disturbed and the generation misoperation by lightning, vehicular traffic light, electro-welding arc, flame etc.By day with the transient process at night in, because being gradual slow, natural daylight illumination changes, when having interference sources such as flame, smog in the surrounding environment, near the switch motion critical point, controller tends to open suddenly neglect and closes, this phenomenon generally continues tens of clocks approximately, just can carry out the transition to stable state.The street lamp automatic switch generally drives a whole piece circuit by connecing contactor.The misoperation of controller will cause that tens and even hundreds of street lamps are opened to neglect suddenly closes, and this not only influences the normal illumination of street lamp, and will shorten the useful life of light fixture, and this is unallowable.
The purpose of this utility model provides a kind of anti-interference street lamp automatic light control switch.It has strong resistivity to non-standing random disturbances signals such as lightning, vehicular traffic light, electro-welding arc, flame, and the natural daylight illumination signal that continues to change is had sensitive reactivity.It has eliminated near the wild effect the critical point of control illumination fully.
Accompanying drawing is an electrical schematic diagram of the present utility model.
The utility model is made of following several parts:
1. stabilized voltage power supply.
2. illuminance signal sensor.
3. be the flip and flop generator that main body constitutes with time-base circuit NE555.
4. be the timing circuit that main body constitutes with time-base circuit NE555.
5. be the anti-interference delay circuit that main body constitutes with time-base circuit NE555.
6. phase inverter.
7. be the anti-interference output stage that main body constitutes with time-base circuit NE555.
8. output relay.
The purpose of this utility model is achieved in that
When the illuminance signal reduces, flip and flop generator 3 upsets, the output high level is through timing circuit 4(or without timing circuit) and deliver to output stage 7 reset terminals, output stage is resetted, the output relay adhesive, street lamp leaves.When interference signal occurring (as lightning), flip and flop generator 3 instant resets, output low level.The negative pulse that this low level produces is divided into two-way, one the road inserts anti-interference output stage 7 set ends, and anti-interference delay circuit 5 is triggered on another road, and the high level of delay circuit output converts low level to through phase inverter 6, be added in the strong reset terminal of anti-interference output stage 7, make output keep stable.Thereby make the interference signal inefficacy of duration, reach jamproof purpose less than delay time.Based on principle of uniformity, this device has also been eliminated near the wild effect of the common automatic light control switch critical point of action illumination fully.
Claims (1)
1, a kind of anti-interference street lamp automatic light control switch, this device has illuminance signal sensor (2), is the flip and flop generator (3) of main body formation with time-base circuit NE555, it is characterized in that comprising in the circuit with time-base circuit NE555 is the anti-interference delay circuit (5) that main body constitutes, phase inverter (6) and be the anti-interference output stage (7) that main body constitutes with time-base circuit NE555, the output signal of anti-interference delay circuit (5) is connected to the strong reset terminal of anti-interference output stage (7) through phase inverter (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91232327 CN2111596U (en) | 1991-12-17 | 1991-12-17 | Antijamming automatic light control switch for street lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91232327 CN2111596U (en) | 1991-12-17 | 1991-12-17 | Antijamming automatic light control switch for street lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2111596U true CN2111596U (en) | 1992-07-29 |
Family
ID=4937374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91232327 Granted CN2111596U (en) | 1991-12-17 | 1991-12-17 | Antijamming automatic light control switch for street lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2111596U (en) |
-
1991
- 1991-12-17 CN CN 91232327 patent/CN2111596U/en active Granted
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |